Problembeschreibung

Multiple vulnerabilities were discovered and corrected in pam:

The pam_xauth module did not verify the return values of the setuid()
and setgid() system calls. A local, unprivileged user could use this
flaw to execute the xauth command with root privileges and make it
read an arbitrary input file (CVE-2010-3316).

The pam_mail module used root privileges while accessing users'
files. In certain configurations, a local, unprivileged user could
use this flaw to obtain limited information about files or directories
that they do not have access to (CVE-2010-3435).

The pam_namespace module executed the external script namespace.init
with an unchanged environment inherited from an application calling
PAM. In cases where such an environment was untrusted (for example,
when pam_namespace was configured for setuid applications such as su
or sudo), a local, unprivileged user could possibly use this flaw to
escalate their privileges (CVE-2010-3853).

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